i could not get close to 500 fsb as i was doing before.
Looks like a BIOS problem.
Is it possible to mod a Pentium 4 540 to the Xtreme Edition FSB (1066)?
that would be great!
Yes, this mod can be done on any Intel desktop processor, and does not depend on certain model. But sometimes may not work due MoBo BIOS matters, like Asus.